Hi,
First, please, correct your code to remove all warnings. It's difficult to find error when you have too much warnings information and you soft will work better.

>> low arrow doesn't disappear after reaching of last page.
You need to change the test of the number of pages. When you have 2 pages, you only have page 0 and page 1.
if(page==numberofpages-1) { arrow1X=320; arrow2X=288; }
>> blue arrows in ArrowHorAnim and ArrowVertAnim functions are refusing to move automatically
you init variable path=0; every frame, you "path" value never change. Test value with writing variable on screen. Move the variable like
void instruction() { ushort *data; ushort flipMode=0; button_available=true; mode=3; page=0; numberofpages=2; path = 0;